Winding key



July 6 1926 C. A. BORNMANN WINDING- KEY Filed Feb. 15, 1926 INVENTOR CARLA. BORNMANN.

ORNEY.

Patented July 6 1926.

UNIT, S.

CARLLA} BORNMANN'; 01? BINGeHKMTONy. NEWa' YGRK}. ASS'EEGNEOR" 'lOL ANSCO PHOTO-:- PKODUOTS", INCL, 05E BiENGI-IA MTON? HEW: YORK.

WINDING KEY.

Application filed February Myinvention relates EtO WlIldlHg keys for cameras, and 1s directedparticularlyto' a novel f means for ho using the variousparts of the key in a manner to occupy a mini-mum amount of space- Within the camera body. My lmprovedstructure 1s especially adaptable t camera 2 bodies 1 formed entirely of metal.

The primary object otmy invention is to provide a: cup member for receiving the means for preventing the turning, of" the key in ,one direction, and being so formed as 1 to also provide a recess into which the web" of the key stem may be drawn.

Another. object is to utihze such cup construction. as a spacer ioiwtlie film spool placed inather camera I Still another ob ect is to provide in C0111:

bination :a windin-gJkey housing and a spool PillhllOllSlllg which form a properly aligned Figure l-is a side view of one end"of"a-" camera illustrating: my, improved key and= spool pin secui'ecl' thereto, with parts being broken. away for clearness. of illustration;

Frigzure 21s a detail View of my improved key shown: partly in cross section.

Figure 3 is a de'tailiofthe film spool pin" locatedin the camera opposite the winding;

key, the two units providing a properly aligned'and spaced rotatable support for a spool;

Figure 4 is an exploded persp'ect1vev1ew of the VZll'lOllSrPll't-S comprisingmyimproved key showing, them in their'relativepositions.

Figure is a similar viewoi "the parts of the spool pin shown in Figure 3 The reference numeral }1 indicates gener-' allythe body of'a photographic cameraprovide'd'with the usual carrying handle 2; The camera shown is preferablyofthe metal type althoughit willbc understoodthat my'invention is applicable to othertypes as 'welli Oneiside 3' of'the camera is-re'cesse'd as at- 4 to receive a cup or housing5 provided with a peripheral flange fi-adapted' to lay flat against the side 8" on the outside of the 16; 1993; Serial; No 88,592!

camera, the cup 5 projecting through into the" 55 camera. p I

A flanged washer 7 is fitted against the outside of side 3 and coverstheopening' and *theexternal flanges 6 of thecupe. Rivets 8', or other "suitable meansrareprovided oo through the washer'. flangevti and side securely holding these parts in'position-on' the'cam'era; V

As illustrated clearly in Figure 2, the the tom, ofth'e cup 5, is turned inwardlyup'onfos itself'as atf9 providingthe'seatorrrecess 10 between the inner and" outer side walls of the" cup. The Washer 7 isfapert'ured cen trahy as-=at' 11 to receive the stem V 12 0f"a" wii'rdi'n'g'key provided 'on' 'its outer end with 70 the finger piece l 'pivotally secured-tdtlre stem by'means of the bearings 14 engageable on'eith'er side of the SlJGll'l, and'the pin-15 passing through said bearing and through the'opening'lti in'the' stem 12.. v p

Thestenr passes also through a central opening" 1 7 in the bottom portion 9' of the cup; 5; Theihnerendof the stem is provided with the web 18" mounted Within the slot 19'by means of the pin 20passing through the. opening 21 in the "stem manta opening 122 iir the web; A .washer-'2'3 encir clesthe' SllQIlTlQ adjacent the bearings llfon' the "finger piecelS, and a spring washer 24L: lies between the washer23" and thed langed cover member'T. This. spring washer- 24.= thus provides a. tension on' the key which prevents its accidental turning. It will be clearfr'o'm FigureQ'that the key stenr '12 may be moved in and. out a" limited distance through the sidewall 3 "Off "the camera to permit the insertion of the usual film spool (not shown);v The circular recess-25 defined'lby' the bottom 9' of "the housing. is-of such di ameter and depth as tofipermitthe'web 18 being drawn intoitforthe lllSSItlOlT'OfSllCll film spool" between' the; housing 5 and the cup 26of a' spool pin' construction' located on {he opposite" side of the camera; from said In'the'space 10 definedbetween the outer and innen'wa'lls" or" the "key 'lrousing 5, is a coil spring 27, one'end 28' ofjwhich is' bent at right angles-across the" diameter of the spring and engageswithin the slot 19 in the stem 12. I Obviously this construction permits the turning of "thek ey' in one direction, hut ifan' attempt is madevto turn it in' the opposite direction, the tendency is to open the coils of the spring 28 which, bearing against the outer wall of the housing 5, bind against said wall and prevents such turning. A Washer 29 is secured adjacent the end of the stem 12 between the inner edge of the web 18 and a shoulder 30 cut on said stem, which vasher limits the outward movement of the stem by engaging against the inner wall of the bottom 9. This washer also lies flush with the circular side wall of the housing 5 and forms an endwise abutment against which the end of the film spool may extend.

Reference has been made to the spool pm construction on the opposite side of the camera directly opposed to the key just described. This construction includes the cup or housing 26 riveted or otherwise secured to the side of the camera as at 31, there being the washers 32 and 33 between the closed end of the housing 26 and the side 34 of the camera. These washers, the cup 26 and the side walls of the camera are apertured centrally to permit the spool pin to be inserted therethrough. A thumb piece 86 is provided on the outer end of the pm.

A single coil of spring wire 37, having its ends turned inwardly as at 38, is received between the washers 32 and 83. The pin 35 is grooved circumferentially as at 39 and 40, the adjacent edges of said grooves being bevelled and the opposite edges thereof being out to form straight shoulders. The ends 38 of the spring 37 are adapted to engage in one or the other of the grooves and due to the aforementioned bevelled edges of said grooves, it will be obvious that the spool pin may be moved outwardly and inwardly an extent equal to the distance between said grooves.

The housing 26 of the spool pin construction and the housing 5 of the winding key thus present directly opposed surfaces in the sides of the camera properly spaced for receiving the film spool with the winding key Withdrawn to its outermost position, that is with the web 18 occupying the recess 25 within the housing 5 and the spool pin 35 withdrawn so that the spring 37 lies within the groove 39, it will be clear that a film spool of the ordinary type may be inserted between these two elements which are then positioned inwardly to engage in the appropriate openings in the end of the spool It will be observed that the foregoing construction and arrangement makes it possible to provide a metal camera which necessarily has very thin walls, with an efficient spool holding and turning device which occupies a minimum amount of space within the camera and which at the same time defines the proper positioning and spacing of the spool within the camera.

It will be obvious from the foregoing, that many changes in details of construction and arrangement of the parts just described may be made without departing from the scope of the invention. I do not limit myself therefore to the exact structure disclosed other than by the appended claims.

I claim:

1. A winding key comprising a housin a stem passing through said housing, a web on said stem, a walled recess in said housing to receive said web therein, and means encircling the wall of said recess and engageable with said stem for permitting rotation of said stem in one direction only.

2. A winding key comprising a housing, a stem passing through said housing, a web on said stem, one side of said housing being turned inwardly upon itself to provide a recess for receiving said web therein, and means lying between the outer side wall of said housing and the side wall of said inturned portion and engaging said stem for permitting rotation of said stem in one direction only.

3. In combination with a camera, a housing secured to one side thereof, a stem passing through said housing and provided on its inner end with a web, the inner wall of said housing being formed inwardly upon itself providing a recess for receiving said web, the wall of said inturned portion being spaced from the outer wall of said housing, and means between said spaced walls and engaging said stem for permitting rotation of said stem in one direction only.

4. In combination with a camera, a housing secured to one side thereof and projecting within said camera, the inner projecting side of said housing being turned back upon itself to provide a recess, a stem passing through said housing and having a web on its inner end engageable within said recess, and means within said housing and said camera and engaging said stem for permitting rotation of said stem in one direction only.

5. In combination with a camera, a housing secured thereto and projecting inwardly through one side thereof, the inner projecting side of said housing being turned back upon itself forming spaced double side walls and a recess within said camera, a stem passing through said housing and provided at its inner end with a web engageable in said recess, and means between said spaced side walls and engaging said stem to permit said stem to turn in one direction only.

6. In combination with a camera, a housing secured thereto and projecting inwardly through one side thereof, the inner projecting side of said housing being turned back upon itself forming spaced double side walls and a recess within said camera, a stem passing through said housing and provided at its inner end with a web engageable in said recess, and a coil spring between said spaced side walls having one end turned across its diameter and engaging said stem whereby said stem may be rotated in one direction only.

7. In combination with a camera, a housing secured thereto and projecting inwardly through one side thereof, the inner project- 0 ing side thereof being turned back upon itself to provide a recess, a stem slidably and rotatably mounted in said housing and having a web on its inner end engageable within said recess, a second housing on the opposite side of said camera in alignment with said key housing and projecting inwardly, a pin slidable through said housing, said housings forming a spaced support for a spool.

CARL A. BORNMANN. I 

